Insole



FIG. 1 is a perspective view of an insole showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a front elevational view thereof; and,

FIG. 6 is a back elevational view thereof.

The broken lines immediately adjacent the shaded areas represent the bounds of the claimed design; the broken lines form no part of the claimed design. 

The ornamental design for an insole, as shown and described. 